DISPOSITIF DE MESURE DE DEFORMATIONS LE LONG D'AU MOINS UNE FIBRE OPTIQUE, UTILISATION D'UNE FIBRE OPTIQUE POUR FAIRE UNE MESURE DE DEFORMATIONS ET PROCEDE DE MESURE DE DEFORMATIONS

摘要

The invention relates to a device (100) for measuring deformation along at least one first optical fibre (10). Such a measuring device (100) comprises the first optical fibre (10) and an optical system (20) linked optically to the first optical fibre (10) and adapted for making a measurement according to the principle of Brillouin measurement so as to determine the deformation along the first optical fibre (10). The first optical fibre (10) comprises a fibre core with a molar proportion of alumina of at least 6%. The invention also relates to the use of such a first optical fibre to measure the deformations and a method of measuring deformation.